ports not connecting

jhudgina Said:

"ports not connecting: The port from my monitor to my MacMini work intermittently. I just move the cable from one port to the other and that solves it until the next time but what can I do?"

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Fixing Port Issues:

Reset the SMC and NVRAM:

(Applies to Intel-Only Macs): Sometimes changes(i.e. formats) are made to the system and then settings (i.e. for Keyboard) become manipulated, technically.  So, reset both on your Mac. Perhaps the keyboard's settings for it keys are mingled. It might take upto three tries to reset both. So, be certain you have the time to do so.

Boot in to Safe Mode:

In Safe Mode, login items do not run, and corrupt system files(i.e. caches) are intentionally reset as a way to fix issues. So, boot into it, seeing if you then use this. For instructions, go here: How to Use Safe Mode on your Mac - Apple Support

Perform the Following:

1. Boot: in to Safe Mode: [Hold Down: the shift key upon boot].
2. Log in: as same user
3. Wait: 30 seconds
4. Restart; your Mac
5. Log in: as same user

See if this now works

Please provided more information.

What year model Mac Mini?

What macOS is it running?

What Monitor/Display?

What adapter/cable?

When are you having to unplug and re-plug the monitor/display, after restart, wake, both?